Mineral oils: processes and products – Refining – Metal contaminant removal
Reexamination Certificate
2007-02-01
2010-08-03
McAvoy, Ellen M (Department: 1797)
Mineral oils: processes and products
Refining
Metal contaminant removal
C208S106000, C208S134000, C208S308000, C208S295000, C208S299000
Reexamination Certificate
active
07767076
ABSTRACT:
The reforming of heavy oil with supercritical water or subcritical water is accomplished by mixing together supercritical water, heavy oil, and oxidizing agent, thereby oxidizing vanadium in heavy oil with the oxidizing agent at the time of treatment with supercritical water and separate vanadium oxide. The separated vanadium oxide is removed by the scavenger after treatment with supercritical water. In this way it is possible to solve the long-standing problem with corrosion of turbine blades by vanadium which arises when heavy oil is used as gas turbine fuel.
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Hokari Nobuyuki
Koizumi Hiromi
Miyamoto Tomohiko
Takahashi Hirokazu
Dickstein & Shapiro LLP
Hitachi , Ltd.
McAvoy Ellen M
Po Ming Cheung
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